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O3-type layered transition metal oxide Na(NiCoFeTi)1/4O2 as a high rate and long cycle life cathode material for sodium ion batteries
| Content Provider | United States Department of Energy Office of Scientific and Technical Information (OSTI.GOV) |
|---|---|
| Author | Yue, Ji -Li Bak, Seong -Min Fu, Zheng -Wen |
| Organization | Brookhaven National Laboratory (BNL), Upton, NY (United States) |
| Abstract | High rate capability and long cycle life are challenging goals for the development of room temperature sodium-ion batteries. Here we report a new single phase quaternary O3-type layer-structured transition metal oxide Na(NiCoFeTi)1/4O2 synthesized by a simple solid-state reaction as a new cathode material for sodium-ion batteries. It can deliver a reversible capacity of 90.6 mA h g–1 at a rate as high as 20C. At 5C, 75.0% of the initial specific capacity can be retained after 400 cycles with a capacity-decay rate of 0.07% per cycle, demonstrating a superior long-term cyclability at high current density. X-ray diffraction and absorption characterization revealed reversible phase transformations and electronic structural changes during the Na+ deintercalation/intercalation process. Ni, Co and Fe ions contribute to charge compensation during charge and discharge. Although Ti ions do not contribute to the charge transfer, they play a very important role in stabilizing the structure during charge and discharge by suppressing the Fe migration. Additionally, Ti substitution can also smooth the charge–discharge plateaus effectively, which provides a potential advantage for the commercialization of this material for room temperature sodium-ion batteries. |
| Sponsorship | USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22) |
| Related Links | https://www.osti.gov/biblio/1228845 |
| Page Count | 12 |
| File Format | |
| ISSN | 20507488 |
| DOI | 10.1039/C5TA05769H |
| Journal | Journal of Materials Chemistry. A |
| Volume Number | 3 |
| Issue Number | 46 |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Publisher Date | 2015-10-09 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | ENERGY STORAGE National Synchrotron Light Source |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Renewable Energy, Sustainability and the Environment Materials Science |
